MKV → MP4
MKV to MP4
MKV is a flexible container loved for multiple tracks and high quality. But iPhone, Android, TVs and social networks do not always open it. MP4 with H.264 and AAC provides compatibility and smooth playback on most devices.
The file will be deleted from the server automatically.
How to convert MKV to MP4
- 1Upload an MKV file
- 2Wait for the conversion to MP4
- 3Download the video and open it on your phone or TV
More about MKV to MP4
When to convert MKV to MP4
MKV is convenient for storing movies and videos with multiple tracks, but it is poorly suited to mobile devices and social networks. MP4 with H.264 and AAC opens on iPhone, Android, smart TVs and most editors without additional codecs.
How it works
The server runs ffmpeg in an isolated queue: video is encoded to H.264, audio to AAC, and the container gets the faststart flag. Progress is visible on the page, and the source file and result are deleted automatically after download or within an hour.
What to know
The main video and audio tracks are preserved, while subtitles and additional audio tracks are not. The file size is limited to 100 MB, duration to five minutes and resolution to Full HD. For complex releases with multiple tracks, use desktop tools.
Questions and answers
Why does MKV not play on iPhone?
iPhone and many mobile players do not support the MKV container and some codecs. MP4 with H.264/AAC is the standard that opens without extra apps.
Are subtitles and multiple audio tracks preserved?
The current version keeps the main video track and the main audio track. Subtitles and extra audio tracks are not preserved.
What are the limits?
Up to 100 MB, 5 minutes and Full HD. Larger files should be trimmed or compressed first.
Does quality stay the same?
Video is re-encoded at CRF 23, which keeps high visual quality. A small loss is possible, but it is usually invisible on devices and social media.